What year is my snapper model 287707 how to#

Then tighten the lock screw back down.It should be a snug fit, and the gauge should have some resistance when trying to pull it out. Then tighten the retaining nut until the feeler gauge will just barely slide in and out. 004' feeler gauge and insert it between the valve stem and rocker. You will notice the slack in the rockers, the amount of slack is what you are adjusting. Usually this screw will be a Torx head, but whatever it is, loosen it and then loosen the retaining nut. On the rockers, the stamped metal pieces that open the valves, there will be a nut and a lock screw inside that nut.Now put the dowel back in, and rotate the flywheel so that the piston is now 1/4' past TDC. What you are doing is making a gauge to line up the piston travel with a reference point. The valve lash should be set with the piston at 1/4' past TDC.Now remove the dowel and make another mark 1/4' above the first mark. Find a spot on the head that's easy to see, and mark the dowel where it lines up with that spot.With the piston at TDC, rock the flywheel back and forth to find the highest spot of the piston travel using your dowel.You only want the dowel in the cylinder when the piston is at or near the top of its travel. If the dowel starts to become caught in a bind, back the piston up and remove the dowel. Slowly turn the flywheel by hand while holding the dowel against the piston, and you will feel the piston move.At this point, take the wooden dowel and insert it into the spark plug hole.Once the intake valve closes, the piston will be headed to the top of its travel, or Top Dead Center (TDC). You will need to turn the flywheel clockwise until you see this valve open (move downwards) and then close again.

If you remove the pushrods, typically the intake valve will have an aluminum pushrod, while the exhaust valve has a steel pushrod. This will be the one that the carburetor feeds fuel and air into. If you turn the flywheel by hand, you will see the valves move up and down and see how the assembly works. The valves are the ones with the springs on them.

Now with the cover off, you can see the rockers, push rods, valve springs, and valve stems.

If you are careful, you can usually re-use this. There is a gasket between the valve cover and head. These screws are usually 3/8' or 7/16' hex head and are removed using a socket and ratchet. It will have OHV stamped into it and is held on with four screws/bolts. This will be the silver cover on top of the engine head.

First, you need to access the valve cover.

What year is my snapper model 287707 how to#

How to Fix a Compression Release Problem in Your Briggs & Stratton Engine

Ratchet with extension and 3/8', 7/16' and 1/2' sockets.

You have to bring each piston to its respective TDC to adjust each cylinder's valves. If you have a twin cylinder engine, you have to treat each cylinder separately. Twin Cylinder Engines Require Treating Each Cylinder Separately If all this checks out okay, then it's a reasonable diagnosis to suspect the compression release. With one lead from the voltmeter on the post, on the starter where the cable connects and the other leads to a good ground such as the engine block, there should be about the same voltage as there was at the battery. What you have to do is ensure that all safety features are activated just as though you are starting the engine. You may need a helper at this point, depending on the equipment. Next, check the voltage at the starter with the key in the start position. To diagnose this problem, you will need a voltmeter.įirst, check the battery voltage by using the voltmeter on each battery terminal. How to Diagnose Your Lawn Mower Engine's Problem This guide will help you diagnose and fix your hard-to-start Briggs & Stratton engine.

If the engine will turn over easily and hiccups, won't rev or make power, or just won't start, then you may be looking at a fuel supply problem.