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20 hp mercury 2 stroke outboard, unable to get pull rope to pull out fully.

S

Snookman

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i am unable to get pull rope of mercury outboard to pull out without stopping on manual start outboard. With the plugs out the rope pulls fine not with plugs on. I removed the manual pull start to find the same when trying to turn the flywheel. With plugs out ok with plugs in unable to turn flywheel easily. It would bind in some spots. Any suggestions?
 
Year and serial number needed.----Drain gear oil and inspect.----How did it run for you last season ?----Perhaps the motor is in good condition with lots of compression.
 
Ser# OD281949 of engine. Not sure of year. Ran fine then stopped running. Found some water in gas , drained fuel line, cleaned out and rebuilt carburetor. Then tried to start then rope pull issue. Like i said no issue with plugs out but when in unable to pull rope fully and flywheel hard to turn by hand in spots. Will drain gear oil and see what i find . Any other ideas?
 
I can not see or feel your motor.----It does sound like bearing issues to me.-----Water pump impeller replaced every 5 years or so ?
 
drained gear oil was black, no metal or water or rust. Replaced the gear
Lube. How would i lube bearings to free them up, penetrating oil to free them? How to get to the bearings without tearing engine apart? Any easy way to get this accomplished would be appreciated.
 
Use a service manual-remove lower unit and see if the problem still exists, remove impeller and check gears/bearings for freedom of movement.
 
Do as stated by Tony. Drop the bottom end. If the motor turns freely, the issue is in the gearcase. You can now focus on that.
Post #4 doesn’t make sense. If you can turn the flywheel easily, with plugs out…squirt some fogging oil into each chamber, (lay the motor so the piston face is horizontal), then spin it to distribute oil. This will lube piston & rings, but tolube the crankshaft you need oil introduced via the carburetor,(intake).
Back to post #4 - if the motor turns freely with plugs out, but binds with them in…did you change plugs? Maybe pistons are hitting a long reach plug. If it became “sticky” after running fine, then stopping…perhaps it overheated & partially seized, hence the ask if you’d changed the impeller.
On a “new to me motor”, I monitor temps very closely on bucket startup, & never put it on my boat without a new impeller. Impellers are cheap + a beef & bit of time. Seized motors are not.
 
I’m with Edchris, it doesn’t make much sense to me, it ran fine and then stopped. Can you go through with a little further detail why went wrong ? If any work was done just before that and what has been done so far.
If it was running fine before stopping it’s unlikely to be seized, when you turn the engine using the flywheel with the plugs out, does it sound just fine and there’s no sign of bearings being rough ?
 
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