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Somerville, Indiana | all good information. But, on the decompression, leave main engine decompressed while starting. Push the hand clutch on pony engine away from engaged to stop the pinion, if running 15W40 won't have to use 1st gear on pony ever, get the main engine spinning, again on decompression, until oil pressure registers. Do this by moving the pony clutch handle from disengaged to engage quickly so the pinion doesn't grind teeth, might take some practice. engage the compression on main engine. Barely crack the throttle, if white smoke rolls back off the throttle until the intake manifold on main engine warms some more. 1 minute at most in warm weather first start of the day, up to 10 minutes in minus cold weather. After warming some more pull the throttle back to 1/2 way to let the pony clutch kick out, then turn off gas as stated above. Idle main engine down to 1/3 for a couple minutes. Oil clutch on main engine needs to warm some to shift properly, 2 minutes in warm weather, up to 10 minutes in minus cold. You may not have an oil clutch tho. NEVER let the pony overspeed, it has a governor, be sure it is working properly. We have ran a D7 since 1976 with pony engine, just be sure carburetor and magneto are in good shape before cold weather.
With a little practice, this can be accomplished in 15 seconds=70° weather.
Edited by dave morgan 5/30/2009 10:15
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D-6 Dozer
