Recent content by dtestin

Update - Toro MX4250 74760 315002651 June 2015 24.5hp 708cc Loncin 2P77F engine. After checking everything, I bought new coils. It started right up and I ran it for a few minutes and figured all was good. Went out a couple hours later and would not start. It does have spark, good compression and...

Adjusting valves: rocker is sloppy side to side and moving it around allows the feeler gauge to slip in and be the right feel. Is this typical?

Flywheel key is not sheared, lines up perfectly. I was hoping that was the issue.

I am going to check the flywheel shear pin but not until about 3/16. Maybe plugs and recheck valve clearances if the pin is good. Compression is about 150/145.

If I don't have that bright blue spark, does it mean I likely need new coils? It seemed at least one of the coils might have been touching the flywheel before I adjusted them. Would that damage the functionality of the coil?

Here is additional information Toro MX4250 74760 315002651 June 2015 24.5hp 708cc Loncin 2P77F engine. It had been hard starting and occasionally backfiring when starting last year. It did not want to start when hot. I had adjusted the valves last year and that did not seem to help. I cleaned...

Adjusted the coils and valves. I have spark but not sure how strong the spark should be, for comparison. Battery is charged and engine spins well, plenty of compression. Fresh gas and cleaned carb. I even sprayed a bit of starter fluid in the cylinders after checking for spark. Would not even...

2015 24.5hp Toro Loncin 708cc engine, 240 hrs. Backfires, does not start when hot. Gas was fresh. Cleaned carb and it was clean inside, don't seem to be any adjustments. Coils seemed to be good using an inline tester. What else should I be looking for? Vacuum leaks? There are a couple of black...

2015 Toro v-twin 24.5 commercial Loncin 708cc won't start when hot. Thinking carbs or coils but wanted to get some advice on best place to start. Runs well until I shut it off.

Gravely sells for 92.35. There is also a Gladiator starter that lists 136-7880 specifically. It looks similar but definitely different but is only 42.99 on Ebay. May give it a try.

I need to repair or replace my starter. Does anyone know why starter 136-7880 is so expensive at $175-250? It has a somewhat different design with long bolts outside the case and the head seems to be extra stout. There is an unexpected cross reference to Gravely 21110533. which seems to be much...

Valve clearances are set according to specs on compression stroke. Mower runs great but just have trouble getting it to crank. It can just barely overcome the compression if I hold the key for several seconds. Other ideas?

Do you have a picture of the ACR so I can see how it works?

Model 74760, I believe it is Engine: LC2P77F Clearance (cold) (Intake) 0.004 - 0.006 in. (0.10- 0.15 mm) - Clearance (cold) (Exhaust) 0.006 - 0.008 in. (0.15 - 0.20 mm)

It cranks great with plugs out. Battery is good. Seems like ACR automatic compression release is not working. Luckily it starts easily once I hold the key and get past initial compression. Any experience with this or knowledge of the ACR mechanism? I adjusted valves and did not see a "bump" on...