Hipa 694394 Primer Bulb for Briggs and Stratton 9B900 9C900 9D900 Engine Toro 16410 16411 20431 20432 Lawn Mower Replaces 691347 494408

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Free Shipping on US Orders

How long does delivery take?
3-7 business days.

What countries do you ship to?
US , CA and Mexico, only US with free shipping.
While we need to charge $4.99 shipping fee for the following US areas:
1. Alaska
2. Hawaii
3. Puerto Rico

Thank you for your understanding.

Returns Policy

1 Year Warranty


Hipa guarantees any products will be defect-free (material and workmanship) under normal use and service for ONE YEAR. For any manufacturing quality problems, we will offer you a replacement within one year of receipt of your original purchase.

30-Day Returns Policy


We have a 30-day returns policy, which means you have 30 days after receiving your item to request a return. If you need to return a product purchased online from Hipastore.com, here is what you need to know:

Items shipped from Hipastore.com can be returned within 30 days of receipt of shipment for a full refund. (Original shipping fees are not refundable.)

To start a return, you can contact us at service@hipastore.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. You can always contact us for any return questions at service@hipastore.com.

1."How To Replace a Primer Bulb on lawn mower?"

A:"Step 1: You can start by removing the motor cover.
Step 2: Remove the air filter cover along with the air filter.
Step 3: With the cover removed, you have access to the screws securing the primer base. The primer bulb is secured to the base with a plastic clip. You can use a couple of screwdrivers to release the clip. With the old primer bulb removed, you are now ready to install the new one.
Step 4: Remove the old clip from the old primer bulb and install it onto the new bulb. Line the ears with the openings on either side of the base and use a screwdriver to snap them into place.
Step 5: Now you can reinstall the base and connect the throttle linkage. Make sure that the breather tube should be realigned to the back of the base and align the base with the carburetor. Secure it with the screws. Then you can reinstall the air filter and the motor cover."

2."why primer bulb not working on lawn mower?"

A:"2.1. Clogged Fuel Line or Carburetor:
Problem: Dirt or debris can clog the fuel line or carburetor, preventing fuel from flowing to the primer bulb.
Solution: Inspect the fuel lines and carburetor for clogs. Clean or replace them if necessary.
2.2. Damaged Primer Bulb:
Problem: Over time, the primer bulb can crack or become worn, preventing it from working properly.
Solution: Replace the primer bulb with a new one if it’s cracked or damaged.
2.3. Air Leaks:
Problem: Air leaks in the fuel system, such as loose connections on the fuel lines or around the carburetor, can prevent proper priming.
Solution: Check for any loose or damaged fuel line connections and ensure everything is sealed tightly.
2.4. Fuel System Issues:
Problem: Low-quality or old fuel can cause issues with fuel flow to the primer bulb.
Solution: Drain the old fuel, clean the system, and refill with fresh, clean fuel.
2.5. Faulty Check Valve:
Problem: Some primer bulbs have a check valve inside to prevent fuel from flowing backward. If this valve is faulty, the bulb may not work.
Solution: Inspect and replace the check valve if necessary.
2.6. Blocked Vent in Fuel Tank Cap:
Problem: If the fuel tank vent is blocked, it can cause a vacuum that prevents fuel from flowing to the primer bulb.
Solution: Check the fuel tank cap for any blockages and ensure it's venting properly.
2.7. Weak or Stale Fuel:
Using old or improper fuel can cause poor performance."

3."should a primer bulb stay hard on lawn mower?"

A:"No, the primer bulb on a lawn mower should not stay hard. It should feel soft and easy to press after you've pumped it a few times.

If it stays hard or stiff, it could indicate a few issues:
Clogged fuel line or carburetor – Fuel isn't reaching the bulb.
Air leak – An air leak can prevent the primer from working properly.
Damaged primer bulb or check valve – The bulb or internal components could be broken or malfunctioning.
You may need to clean or replace parts of the fuel system to resolve the issue."

4."why a primer bulb not filling with fuel ?"

A:"Clogged Fuel Lines: Blockages in the fuel lines can prevent fuel from reaching the primer bulb.
Faulty Fuel Pump: If the fuel pump is malfunctioning, it won't properly draw fuel into the primer bulb.
Air Leaks: Cracks or leaks in the fuel lines or primer bulb itself can cause air to enter, preventing proper fuel flow.
Empty Fuel Tank: Ensure the fuel tank has enough fuel to be drawn into the system.
Dirty Carburetor: A clogged or dirty carburetor can restrict fuel flow to the primer bulb.
Inspect these components to resolve the issue."