Mower: 2014 Craftsman T3000 / Model 917-203900 with 440 hours. Engine is a 22 HP Briggs platinum / Model 44R677 Type 0021 G1 ( info from the valve cover).
so i have been chasing a small misfire/backfire in this mower for a few weeks now. Some suggested adjust the valves. I have cleaned the carb halfway and I ordered some jets, o rings, etc for the carb and installed it today...runs really good now.
Right before I did this carb work, I adjusted the valves to 0.005 on all valves. I turned the motor until exhaust valve was fully opened and adjusted the intake and vice versa for both sets of valves.
Now I have the click / flywheel barely spinning; it wasnt doing this before so I know I have done something wrong. When it cranks, it runs great.
Should I set the valves to 0.004 or 0.006 or am i missing something else?
Exhaust valves always have more clearance than the intake valves. The last one I did I think I set the intake at .006 and the exhaust at .010 - test compression after to see what you have
ADJUST VALVES1. Set No. 1 cylinder at 1/4” (6.4mm) past TDC, compression stroke.a. Adjust valves and check, Fig. 25.Valve Clearance (cold) IN and EX .005” (0.13 mm)b. Torque jam nut and adjusting screw to 60 in. lbs.(7.0 Nm).2. Set No. 2 cylinder at 1/4” (6.4mm) past TDC, compression stroke.a. Repeat for No. 2 cylinde
#4
dawgn86
update: set the exhaust at 0.06 and the intake at 0.05. Runs like new now..thanks for the advice!
