I wanted to see if my machines would fire up at 35 below. The indy lite 340 started well enough but my Trail 550 RMK was reeeeeealy stiff.
I turned the 550 over by hand using the primary clutch to loosen it up but it was still pretty darned stiff. Pulling on the rope never got easy - just stiff. Pre-heating the plugs didn't work but I don't think the engine was turning over fast enough to fire. I am running the synthetic mix oil not 100% synthetic. No doubt 100% synthetic would help.
What do you guys do to pre-heat your machines? Tricks, tips, methods...? A friend says he uses his MSR camp stove, a homemade stove pipe that goes up into the exhaust pipe to warm the engine.