Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hi and welcome thank you for requesting me.
Is fuel pump on?
Why is engine being built or what was the failure?
Let me know
You are going to have resistance from injection pump, so this is normal.
As long as engine crank turns smooth and does not lock up you should be good as long as the failure was not cam or pump related.
The springs inside injection pump are about the same size as valve springs and must compress to inject fuel.
Just turning injection pump by hand is difficult.
Let me know if you need anything else.
Then I would change the other gears just to be safe.Cam and idler gear.
Sometimes you can get away with just one gear but if they don't mesh smoothly all drive gears should be replaced just to be safe.
Did you check gear pattern with Blue?
How much backlash do you have?
To much or to little clearance with a poor tooth contact could be the problem.
Its got straight teeth that does not mean there is no pattern!
If its to tight,,going to deep,only hitting on part of tooth you will see that with blue!
I've built hundreds of engines and transmissions with straight teeth it does make a difference.
That will confirm you need to replace other gears as a set.