Customer came to me with a 450. Claimed it was running good last fall. Now won't start. New fresh fuel, clean exhaust screen. New plug (several), Air filter spotless. Well just a clogged carb, right? Sonic cleaned the carb with new diaphragms. Hit the primer button and get one hit, then to off choke and one more but no run. Fuel squirt into carb, no help.
OK I got this. Have another perfectly running 450. Swap the coils. Good saw now runs crappy so I figure I got it. Customer saw now tries to idle to no acceleration. Gives it the huh,huh huh only. Check magnets on flywheel, check timing on both saw, same timing. Ok Chinese carb so probably messed up. Swap carbs and the customer saw is still doing same, other running perfect (with coil from inventory).
White flag, anybody?
OK I got this. Have another perfectly running 450. Swap the coils. Good saw now runs crappy so I figure I got it. Customer saw now tries to idle to no acceleration. Gives it the huh,huh huh only. Check magnets on flywheel, check timing on both saw, same timing. Ok Chinese carb so probably messed up. Swap carbs and the customer saw is still doing same, other running perfect (with coil from inventory).
White flag, anybody?