Where is the oil drain plug for a 18.5 Briggs and Stratton riding tractor

SOURCE: is there an oil filter on a Briggs/Stratton riding lawn mower. Model#42A700

Yes there is a spin on oil filter. Depending on the date code when the motor was built there are two possibilities. The easiest way is to measure the length of the filter, If the filter is 2 1/4" long the Part Number is 492932.
If the filter is 3 1/4" long, the Part Number is 491056.

SOURCE: Engine starts but won't stay running

an easy way to know that is to start engine and give it a shot of starting fluid ,if you can keep it running by this method I would replace diaphragm.

SOURCE: Briggs and Stratton 22hp v twin OHV smoking badly

First thing to do is pull your dipstick and check for broken or missing O-ring also as you pull it, look to make certain that it was seated properly and all the way locked. If either condition exists, you will be leaking into the crankcase which will cause your symptoms

SOURCE: we have 42'' Yard Man riding lawn mower need to how to change oil

it's a square head pipe plug @ base of eng. either right or left side of machine may also have a quik change fitting instead its black plastic w/ yellow cap

Testimonial: "Thanks for the info, you where right on the money.. I finally found it, its on the right side if you were sitting on mower. Thanks again!"

Kelly

• 3740 Answers
• Posted on Apr 14, 2010

SOURCE: I have a briggs -stratton 12 h.p. engine on my

Hi and welcome to FixYa I am Kelly.

This post is listed under the Intek V-Twin engine that would be engine model number 281707-0148-01 so I am making my recommendations based on that model number. If your ENGINE model number is different from the one above please respond with the number.

It sure sounds like there may be a compression problem. All other elements
Fuel, Air and spark are in place. If you can not get even a backfire it sounds like there may be a valve sticking open. Probably more than one if not even one cylinder is firing.

I have one question..... Has this engine been sitting unused for a while?

Lets start with something simple. (again based on 2 cyl engine but procedure would be the same for a single cylinder)

1. Remove both spark plugs
2. Spray a very generous amount of WD 40 in BOTH spark plug holes.
3. Use the starter and turn the engine through for about 5 seconds
4. Again spray WD 40 into the cylinder head via the spark plug holes and let it soak for about 15 minutes.
5. Turn the engine through again with the starter for at least 15 seconds. Pause 1 min and then another 15 seconds.
6. With assistance Use your thumb to cover the spark plug hole opening and check each cylinder for compression

Compression = Yes / Install spark plugs and try starting.

Compression NO ... If engine is OHV remove valve cover cap(s) and spray WD 40 through the valve springs onto the valve stems then let them soak for about 15 minutes.
Turn the engine through again

Flat head engine

Remove cylinder head only and check the valve seats for coking in the seats. ESPECIALLY the exhaust valve. There should be a visual ring where the valve mates to the valve seat. If you can not see a visual ring then the valve seats should be hand lapped with valve grinding compound. (Valve Spring will have to be disconnected but NOT removed to hand lap with valves grinding compound)

Once you get a ring that you notice on the valves then reconnect the springs and install the head.

Check for compression with your thumb by having the engine turned through.

You really should have compression at this point.

Install spark plug and start the engine.

If you need more assistance or.. have a different model number other than the one above... then just respond here and some one will help you.

Thanks for using FixYa.

Kelly