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Qaagi - Book of Why

Causes

Effects

breather ... excessive crankcase pressuremay causecrankshaft seal leakage

positive crankcase pressure(passive) are almost always caused byCamshaft seal leaks

foundwas causingthe crank seal to leak

Engineered to center the front or rear cover when installed , these handy tools helppreventleaks from the crankshaft seals

Excessive wear which enlarges the crankcase bore for any reasonmay causethe crankshaft oil seal to leak

the t - belt gets changed , be sure to check for loose back plate screws on the oil pumpcan causethe crank seal to leak

a restricted breather or an oil slinger clearance that is too tight(passive) is ... caused bya leaking crankshaft oil seal

that the bottom four holes on the flywheel housing have fixings to the block stiffener ( ladder frame ) on the engineto preventcrankshaft oil seal from leaking

a bad pinion bearing(passive) is often caused byA pinion seal leak

a couple of thingscan causea pinion seal leak

oil leaks between the crankshaft and crankcase openingpreventsoil leaks between the crankshaft and crankcase opening

to a slipping clutchcan leadto a slipping clutch

it to run lean but probably would not the new cylinder in 15 minuteswould causeit to run lean but probably would not the new cylinder in 15 minutes

a lean - out ... or a host of other thingsto causea lean - out ... or a host of other things

the enginewill preventthe engine

the lower end to fill with oil if the ski sitscausethe lower end to fill with oil if the ski sits

the oil to spray 10/18/2017 1/1/0001will causethe oil to spray 10/18/2017 1/1/0001

2 axlescauses2 axles

in vibrations at 45 to 65 miles per hourresultingin vibrations at 45 to 65 miles per hour

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