How to Start a Bolens Bl110 Weed Eater? Simple Start Tutorial

Introduction

If you’ve ever struggled to get your weed eater running on a Saturday morning when you’re ready to tackle overgrown grass and weeds, you know how frustrating a finicky small engine can be. The Bolens BL110 is a popular, reliable gas-powered weed eater favored by homeowners for its lightweight design and consistent performance, but even the best equipment needs proper starting technique to work as intended. Whether you’re a first-time user who just unboxed your new BL110 or a seasoned gardener who’s had your tool for years, learning how to start a Bolens BL110 weed eater correctly will save you time, reduce wear on the engine, and make yard work far less of a chore. This guide walks you through every step of the process, from pre-start safety checks to troubleshooting common issues, so you can get your weed eater running smoothly in minutes, no matter the season or weather conditions.

• Introduction
• Understanding Your Bolens BL110 Weed Eater
• Pre-Start Safety Checks You Should Never Skip
• Step-by-Step Cold Start Guide for the Bolens BL110
• How to Start a Bolens BL110 Weed Eater When It’s Warm
• Troubleshooting Common Starting Issues
• Cold Start vs. Warm Start: Key Comparison
• Essential Maintenance Tips for Reliable Starting
• Common Mistakes to Avoid When Starting Your BL110
• Frequently Asked Questions
• Conclusion

Understanding Your Bolens BL110 Weed Eater

The Bolens BL110 is a 17-inch cutting width, 25cc 2-cycle gas weed eater designed for residential use. Unlike electric models, it runs on a mixture of gasoline and 2-cycle oil, which powers the small engine that spins the cutting head. Before you learn how to start a Bolens BL110 weed eater, it helps to familiarize yourself with its core components, so you can identify each part during the starting process and troubleshoot issues more easily if they arise.

Key Components of the BL110

Your BL110 has several critical parts that play a role in starting and operation:

• Fuel tank: Located near the top of the engine, this holds the gas and oil mixture. It has a cap that should be tightened securely to prevent leaks.
• Primer bulb: A small, rubber bulb on the side of the carburetor that you press to push fuel into the engine before starting, especially for cold starts.
• Choke lever: A sliding or rotating lever on the carburetor that controls the air-to-fuel ratio. For cold starts, you’ll close the choke to add more fuel to the mixture; for warm starts, you’ll leave it open or partially open.
• Spark plug: Located on the front of the engine, this creates the spark that ignites the fuel mixture to power the engine. A worn or dirty spark plug is one of the most common causes of starting issues.
• Starter cord (pull start): The cord you pull to crank the engine and initiate the starting cycle. Most BL110 models have a recoil starter that automatically rewinds the cord after you pull it.
• Throttle trigger: The trigger on the handle that controls engine speed. For starting, you’ll usually hold it in the idle position to prevent the engine from revving too high as it starts.

Understanding what each of these parts does will make the starting process far less confusing, especially if you’re using the BL110 for the first time.

Pre-Start Safety Checks You Should Never Skip

Skipping pre-start safety checks can lead to injury, damage to your weed eater, or a failed start. Before you attempt to start your Bolens BL110, complete these quick checks to ensure safe and successful operation:

1. Inspect the work area: Clear the area you’ll be working in of rocks, sticks, toys, and other debris that could be thrown by the cutting head. Make sure children and pets are kept at least 50 feet away from the work area while the weed eater is running.
2. Check the fuel mixture: The BL110 requires a 50:1 gas-to-oil mixture, meaning 50 parts gasoline to 1 part 2-cycle oil. Never use straight gasoline, as this will destroy the engine’s internal components. If you’re unsure if your fuel is mixed correctly, drain the tank and mix a fresh batch before starting.
3. Check for fuel leaks: Inspect the fuel tank, fuel lines, and carburetor for any signs of cracks, leaks, or damage. If you smell gas strongly or see visible leaks, do not attempt to start the weed eater until you repair the issue.
4. Inspect the cutting head: Make sure the cutting string is properly installed and not tangled, and that the cutting head guard is securely attached. A loose or damaged cutting head can cause serious injury if it comes loose while the engine is running.
5. Wear proper safety gear: Always wear eye protection, ear protection, long pants, closed-toe shoes, and gloves when operating your weed eater. This protects you from flying debris, loud engine noise, and accidental contact with the cutting string.

These checks take less than 5 minutes but can prevent accidents and costly repairs down the line.

Step-by-Step Guide: How to Start a Bolens BL110 Weed Eater (Cold Start)

A cold start is when the engine has been off for several hours, or the ambient temperature is below 60°F (15°C). Cold starts require a bit more fuel in the mixture to get the engine running, which is where the primer bulb and choke come into play. Follow these steps to successfully complete a cold start:

1. Place the weed eater on flat ground: Set the BL110 on a level, stable surface, like a patio or driveway. Make sure the cutting head is facing away from you and any obstacles to avoid accidental contact if the engine starts suddenly.
2. Engage the choke: Move the choke lever to the “closed” or “cold start” position. This restricts airflow to the carburetor, creating a richer fuel-to-air mixture that’s easier to ignite when the engine is cold.
3. Press the primer bulb: Press the rubber primer bulb 3 to 5 times, until you see fuel begin to flow into the bulb. You may see a small amount of fuel in the clear fuel line connected to the bulb after a few presses. This pushes fuel directly into the carburetor to help the engine start faster.
4. Set the throttle to idle: Move the throttle trigger to the idle position, or lock it in place if your model has an idle lock button. This prevents the engine from revving too high as it starts, which can cause stalling or damage to the starter cord.
5. Pull the starter cord: Grip the starter cord handle firmly, pull it slowly until you feel resistance, then pull it quickly and smoothly in one motion. Do not pull the cord all the way out, as this can overextend the recoil spring. Pull the cord 2 to 3 times. If the engine sputters but doesn’t start, continue to the next step; if it starts, let it run for 30 seconds to warm up before moving to the warm start section.
6. Adjust the choke if needed: If the engine sputters but doesn’t fully start after 2 to 3 pulls, move the choke lever to the “half-open” position and pull the starter cord 1 to 2 more times. If it still doesn’t start, move the choke to the fully open position and pull the cord a few more times.
7. Let the engine warm up: Once the engine starts, let it run at idle for 30 to 60 seconds to warm up before you begin cutting. This ensures the engine is running at optimal temperature and reduces the risk of stalling when you throttle up.

If your BL110 still won’t start after following these steps, move to the troubleshooting section later in this guide to identify and fix the issue.

How to Start a Bolens BL110 Weed Eater When It’s Warm

A warm start is when the engine has been running recently (within the last 1 to 2 hours) or the temperature is above 60°F (15°C). Warm starts require less fuel in the mixture, so you won’t need to use the primer bulb or close the choke fully. Follow these steps for a quick warm start:

1. Place the weed eater on flat ground: Just like with a cold start, set the BL110 on a stable, level surface with the cutting head facing away from you.
2. Open the choke fully: Move the choke lever to the fully open position. A warm engine doesn’t need the extra fuel from a closed choke, and closing the choke will flood the engine with too much fuel, making it hard to start.
3. Skip the primer bulb: You do not need to press the primer bulb for a warm start, as there is already fuel in the carburetor from the previous use.
4. Set the throttle to idle: Lock the throttle in the idle position to prevent the engine from revving too high as it starts.
5. Pull the starter cord once or twice: Pull the starter cord quickly and smoothly 1 to 2 times. The engine should start almost immediately. If it doesn’t start after two pulls, check for issues like a flooded engine or a dirty spark plug, which are covered in the troubleshooting section.
6. Let the engine run for a few seconds: Once started, let the engine run at idle for 10 to 15 seconds before you begin cutting, to ensure it’s running smoothly.

Warm starts are much faster than cold starts, and following these steps will help you avoid common issues like engine flooding that can occur if you use the choke or primer bulb unnecessarily on a warm engine.

Troubleshooting Common Starting Issues

Even if you follow the starting steps exactly, you may occasionally run into issues when trying to start your Bolens BL110. Below are the most common starting problems and how to fix them:

Engine Won’t Start After Priming and Pulling the Cord

If you’ve primed the bulb, closed the choke, and pulled the starter cord 3 to 4 times with no start, the engine may be flooded. This happens when too much fuel gets into the carburetor, usually from pressing the primer bulb too many times or leaving the choke closed for too long. To fix a flooded engine:

1. Move the choke lever to the fully open position.
2. Pull the starter cord 5 to 6 times quickly to clear the excess fuel from the carburetor.
3. Wait 2 to 3 minutes for the fuel to evaporate, then try starting again using the warm start steps (no primer, open choke).

Engine Sputters Then Dies After Starting

If the engine starts but sputters and dies after a few seconds, it’s usually due to an incorrect air-to-fuel ratio. First, check that the choke is in the correct position for the engine temperature: closed for cold starts, open for warm starts. If the choke is correct, the carburetor may be dirty and need to be cleaned, or the fuel mixture may be old or incorrect. Drain the old fuel and mix a fresh 50:1 gas-and-oil batch, then try starting again.

No Spark When Pulling the Starter Cord

If you pull the starter cord and see no spark at the spark plug, the spark plug may be worn, dirty, or disconnected. First, remove the spark plug using a spark plug wrench, then inspect it for carbon buildup or damage. Clean the spark plug with a wire brush if it’s dirty, or replace it if the electrode is worn down. Reinstall the spark plug, making sure it’s tightened securely, and try starting again. If there’s still no spark, the ignition coil may be faulty and need to be replaced by a small engine repair professional.

Cold Start vs. Warm Start: Key Comparison

Understanding the difference between cold and warm starts will help you use the correct technique every time you operate your BL110, reducing starting issues and engine wear. The table below breaks down the key differences between the two start types:

Using the correct start type for your engine’s temperature will make starting your BL110 far more reliable and reduce the risk of damage to the engine over time.

Essential Maintenance Tips to Keep Your BL110 Starting Easily

Regular maintenance is the best way to ensure your Bolens BL110 starts easily every time you use it. Neglecting basic maintenance can lead to clogged carburetors, worn spark plugs, and old fuel that makes starting difficult or impossible. Follow these simple maintenance tips to keep your BL110 in top condition:

Clean or Replace the Air Filter Regularly

The air filter prevents dirt and debris from entering the engine’s carburetor. A clogged air filter restricts airflow, making it hard for the engine to get the right fuel-to-air ratio to start. Check the air filter every 10 hours of use, and clean it with soap and water if it’s dirty. Replace the air filter every 6 months or if it’s torn or heavily soiled.

Inspect and Replace the Spark Plug

A worn or dirty spark plug is one of the most common causes of starting issues. Remove the spark plug every 25 hours of use, inspect it for carbon buildup or damage, and clean it with a wire brush if needed. Replace the spark plug every year, or if the electrode is worn down to the point where it can’t create a strong spark. The BL110 uses a standard RCJ-7Y spark plug, which is available at most hardware stores.

Use Fresh, Properly Mixed Fuel

Old, stale fuel is a leading cause of starting problems for gas-powered weed eaters. Gasoline can go bad in as little as 30 days, especially if it’s mixed with oil. Always use fresh, high-quality gasoline with a 2-cycle oil rated for air-cooled engines, mixed at a 50:1 ratio. If you don’t use all the fuel in your tank after a use, drain it and mix a fresh batch before storing the BL110 for more than a week. For long-term storage (over 3 months), add a fuel stabilizer to the mixture to prevent it from going bad.

Store Your BL110 Properly

Proper storage will prevent starting issues when you pull your weed eater out for the next use. Store the BL110 in a cool, dry place, away from direct sunlight and extreme temperatures. Drain the fuel tank if you’re storing it for more than a month, and run the engine until it’s out of fuel to clear the carburetor. This prevents old fuel from clogging the carburetor and making starting difficult.

Common Mistakes to Avoid When Starting Your Bolens BL110

Many users make simple mistakes when starting their BL110 that lead to failed starts, engine damage, or frustration. Avoid these common errors to make starting your weed eater as easy as possible:

• Using straight gasoline instead of a gas-and-oil mixture: The BL110 has a 2-cycle engine that requires oil mixed with the gasoline to lubricate internal parts. Running straight gasoline will cause the engine to seize up permanently, requiring a costly repair or replacement.
• Pressing the primer bulb too many times for a cold start: Pressing the primer bulb more than 5 times will flood the engine with too much fuel, making it hard to start. Stick to 3 to 5 presses, then adjust the choke if needed.
• Using the choke for a warm start: Closing the choke on a warm engine will flood it with excess fuel, leading to a failed start. Always use a fully open choke for warm starts, and skip the primer bulb entirely.
• Pulling the starter cord all the way out: Pulling the cord to its full length can overextend the recoil spring, which will prevent the cord from rewinding properly. Pull the cord smoothly until you feel resistance, then let go to let it rewind automatically.
• Skipping pre-start safety checks: Failing to inspect the cutting head, fuel lines, or work area can lead to injury or damage to your weed eater. Always complete the 5-minute pre-start check before operating the BL110.
• Using old or improperly mixed fuel: Fuel that’s been sitting for more than 30 days, or mixed at the wrong ratio, will clog the carburetor and make starting impossible. Always use fresh, properly mixed fuel for the best performance.

Frequently Asked Questions

Below are answers to the most common questions users have about starting and maintaining their Bolens BL110 weed eater:

How much fuel does the Bolens BL110 hold?

The Bolens BL110 has a 0.2-gallon fuel tank, which provides approximately 30 to 45 minutes of run time per tank, depending on weed thickness and throttle setting. Always check fuel levels before starting a long yard work session to avoid running out mid-job.

Can I use ethanol-free gas in my Bolens BL110?

Yes, ethanol-free gas is recommended for the BL110, as ethanol can break down rubber and plastic fuel system components over time, leading to leaks and clogs. If you use gasoline with ethanol, ensure it’s no more than 10% ethanol (E10), and add a fuel stabilizer to prevent breakdown. Always mix ethanol-free or low-ethanol gas with 2-cycle oil at a 50:1 ratio before adding it to the tank.

Why won’t my BL110 start after sitting all winter?

The most common cause is stale, clogged fuel in the carburetor. Old fuel turns into a varnish-like substance that clogs the carburetor’s small passages, preventing fuel from reaching the engine. To fix this, drain old fuel from the tank and carburetor, clean the carburetor with carburetor cleaner spray, and mix a fresh 50:1 fuel batch. You may also need to replace a worn or dirty spark plug from long-term storage.

How do I adjust the carburetor if my BL110 won’t start?

Most BL110 models have two carburetor adjustment screws: an idle screw and a fuel mixture screw. First, turn the idle screw clockwise 1 to 2 turns to raise idle speed, then try starting. If it still won’t start, turn the fuel mixture screw 1/8 turn clockwise to lean the fuel mixture, then try again. If you’re uncomfortable adjusting the carburetor, take the BL110 to a small engine repair shop for professional tuning, as incorrect adjustments can damage the engine.

Is the Bolens BL110 easy to start for beginners?

Yes, the Bolens BL110 is designed to be user-friendly for beginners, with a simple primer bulb and choke system that makes starting straightforward once you learn the correct cold and warm start techniques. Following this guide and completing regular maintenance will ensure your BL110 starts easily every time, even if you’ve never used a gas-powered weed eater before.

Conclusion

Learning how to start a Bolens BL110 weed eater is a simple process once you understand the difference between cold and warm starts, complete basic pre-start safety checks, and avoid common mistakes like over-priming or using the wrong fuel. Regular maintenance, including cleaning the air filter, replacing the spark plug annually, and using fresh properly mixed fuel, will keep your BL110 starting reliably for years to come. If you do run into starting issues, use the troubleshooting steps outlined in this guide to identify and fix the problem quickly, without needing to take your weed eater to a repair shop. With proper care and the right starting technique, your Bolens BL110 will make tackling overgrown weeds and grass a fast, easy task every time you use it.