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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...

The Toro model # is 74760. 133-1568 is the CAMSHAFT, it Replaces 127-9269. From pictures, can you tell anything about the cam and how the ACR functions from that? The pictures I saw, of new parts, did not show ACR mechanism but I did see a notch on the inner face of the cam that would likely be...

I looked closely and could not see any rocker movement before TDC on either cylinder. Would ACR typically be on intake or exhaust? Would it typically be on both cylinders?

Model LC2P77F Engine type V-twin cylinder, Air cooled, 4-stroke, OHV Displacement 708cc Thank you for your reply. From what I have read it is a Chinese Loncin engine branded as Toro. From...

I have a 2015 Toro V-twin (with 225 hrs) and it seems the compression release may not be working. I have checked the battery and all connections. Spins fine with no spark plugs. I have adjusted the valves to the tight end of specs .004 inch intake, .006 inch exhaust. It still mostly stops when I...

Where do I start on evaluating this mower for weak self propel in all 3 speeds. Wheels & drive gears seem to be ok. I am thinking belt, then crankshaft pulley and finally a transmission gear worn out. What else? It is about 14 years old and still in very good shape with composite deck. What...

How do I slow down the self propel? Even the lightest touch is much too fast. Can the cable be adjusted to allow the belt to slip? I seem to recall reading about a Honda retrofit piece that allowed adjustment but I can't find it now. Does Honda have a bigger trans pulley and longer belt to slow...