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Old 01-08-2013, 06:46 PM   #6
lnewqban's Avatar
Joined: Jan 2012
Location: Florida
Oddometer: 291
Many, many years ago, I owned one of those little Jawa's.

They reach 45 ~ 50 km/h (28 ~ 31 mph) even carrying two adults.

Up-hills were not problem in second or first gear.

I would pressure test the crankcase, those crankshaft seals are probably too hard to prevent leaks (worsening performance at low rpm-wide open throttle).

I would verify the transmission for all gears by turning it by hand.

These little engines are more sensitive to poor rings-cylinder seal that to off-timing.

Best !!

lnewqban screwed with this post 01-08-2013 at 06:53 PM
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