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If jets were missing , where did they go ??-----Through the motor ?

You need a total of 4 of those for your motor,.----The regulate an amount of air.----Need a total of 12 jets for your 2 carburetors.-----And 8 are calibrated for fuel flow , 4 are calibrated for air flow.

Good luck with making a deal.

You were asked to list a year / model number.-----You must not slam folks for trying to help you

The 70 HP of 1985 and older was 49 / 50 cubic inches.------The V-4 is 99 / 100 cubic inches.------Amazing power if in good condition.

Let us know how the deal works out.

These V-4 motors often have issues with broken piston rings.-----Use due diligence if investing in one.

The 1-5/16" socket for flywheel.-----You will also need a thin wall 5/16"-12 point socket for rod bolts.--Proper puller for flywheel using 3 bolts 5/16-NF thread.

Do a compression test on the 110 HP before you shake hands on a deal !!

Visit-----leroysramblings-----Will have plenty of information for you.----An 18 HP is just a bigger version of 10 HP

Agreed with post #7----This motor has run very hot.-----Inspection must be done.

??-----The powerhead must be removed from exhaust housing for this job.

???---That would be the intake manifold.-----Powerhead must be removed to do the repair work !

Look at the carburetor bowl carefully.----The high speed jets screw in from the side.----The low speed jets are screwed into the bowl from the top !

Stop running it !!----Do a compression test.----Post your numbers.----Check the gear oil too.

There was a change in top driveshaft spline at end of 1988 production year.-----There was a change to a different engine block in 1986 I believe.

Check the thermostat.----Check compression and post the numbers here.

Very entertaining indeed.------Fellow won't accept facts from someone who has worked on motors since 1968.----Working on his first motor perhaps and no idea on 2 stroke engines and outboards !!

If pistons are scored with grooves in cylinder a rebore with o/s pistons must be done.

No need to.----Simple trouble shooting must be done.-----Trouble shooting is very simple but difficult to teach.----If compression is at 70 / 80 PSI the motor needs to come apart for rebuilding !!