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    1974 20hp blueband merc

    hi , i took my boat out yesterday with my merc 200 on which ive been doing up . she was running sweet at 1/4 throttle through the 6 knott limit so when i was clear i opened her up and god she was shifting after about 5 minutes there was a bit of a slight surge in power so i throttled off only to...
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    1974 merc 20hp spark but only running on 1 cylinder

    hi , i have good spark on both cylinders , good compression i have cleaned carb out , replaced hi and low speed coils yet still i only get half throttle . i pulled ht leads only to find no1 cylinder not firing yet spark is good when plug is out . it will start on no2 cylinder without no1...
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    merc 200 flywheel puller

    hi , is there a specific flywheel puller for a 1974 mercury thunderbolt 200 20hp blueband and how would i use it also could i remove the flywheel without any puller . i need to get at the stator to replace the high and low speed coils. thanks in advance :confused:
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    which prop for newbie

    hi , i have a 13ft dell quay dory with a 1974 20hp mercury thunderbolt outboard , what size prop with what pitch should i get , it came with a 2 blade 10" prop but wont rev out so im thinkin 3 blade but dont know what i should get any pointers would be much appreciated .
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    2o hp blueband wont rev

    hi , i have a 20 hp 1974 mercury blueband , it idles fine and revs to the start position on tiller after that it sits at a faster idle when under load . ive replaced switchbox but still no top end power , anyone got any ideas ? could this be due to a timing issue ?:confused:
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