Yamaha Waverunner Xl 800 / Xlt 1200 Jet Ski Pwc Cover - Answered Questions & Fixed issues

The owners manual does not provide torque specs there is an on-line manual for $5 which claims to cover torque specs at: https://www.tradebit.com/filedetail.php/141315359-yamaha-waverunner-gp1200r-service-manual-repair-2000-2002 Good luck!

You'll see 2 small caps in the carburettor cover. Do that fogging only in very well ventilated area ( outside thus). Run the engine on idle, open both caps, spray as much fogging oil in both holes ( use 2 cans) till the engine stalls. Close the caps. Done...

Have you tried without fuel tank cap? Seems to me as a fuel delivery problem...

Only of you have ran the engine out of oil...Sounds like the carbs may not be set correctly.. .Did a professional do the rebuild?..What exactly was "rebuilt".. were any parts replaced? Sounds like the low speed (pilot jets/air screw passages may not be clean as they need to be??) Please check the compression on each cylinder..remove the spark plugs... hold the throttle (carbs) wide open when you check this.. spin the motor for 5-8 seconds... you should get 120psi. minimum..(and less than 10psi difference).. if less, it might be time to actually rebuild the top end..(new pistons/rings/hone cyl.).. only bore it if absolutely necessary.. get it measured.. There are only 3 parts in a two-cycle carb that ever need to be replaced,,(unless they are actually broken) The needle and seat assy., the jet needle and the needle jet. ..see pic... parts # 41 = needle and seat assy. #6 = jet needle, #37 = needle jet. The needle and seat regulate the flow of gas into the carb as the floats rise and fall..,, if they are damaged or leaking the carb will overflow with gas., the needle jet is a orifice with a specific size..The jet needle has a specific size, taper, and length..== The jet needle and needle jet work in unison to regulate the flow of gas from right off idle all the way to WFO..the needle jet/jet needle WILL wear over time causing the fuel/air mixture to become richer and richer and start fouling spark plugs..(this is more pronounced on 4-cycle ATV's)... I hope this has shed some light on your carb situation... Good luck... exploded view of mikuni carb Google Search

possible air leak at your cylinder base gasket or a crank seal.

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&cad=rja&uact=8&ved=0CEoQFjAI&url=http%3A%2F%2Fdespair127.oggettipromozionalitorino.com%2Fbenefit%2Ffx1-jet-ski-shop-manual-2423515.pdf&ei=pTqcVeu0IYP_-AHZ04u4BA&usg=AFQjCNFpybz5NcwUh428WX

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&cad=rja&uact=8&ved=0CEoQFjAI&url=http%3A%2F%2Fdespair127.oggettipromozionalitorino.com%2Fbenefit%2Ffx1-jet-ski-shop-manual-2423515.pdf&ei=pTqcVeu0IYP_-AHZ04u4BA&usg=AFQjCNFpybz5NcwUh428WXluJvk3NM-gHw&bvm=bv.96952980,d.cWw

nissan altima wiring diagram Google Search

2001 2002 Yamaha Waverunner Xlt800 Factory Service Repair Manual

Make sure you are using Yamaha oil not an off brand. It does make a difference.

Do you have a 1200 xlt ? If yes then undo the 2 large jubilee clips on the top of the exhaust , slide it forward to access the next 2 clips on a smaller pipe , slide this forward also ! Then remove the 2 clamps on the top of the cylinder head , remove the spark plugs or they wont come off and put rags in the plug holes ! Then below where the clamps came off there are 2 bolts down between the engine and exhaust to come out , then at the rear of the engine there is another clamp , totally remove it also ! Then release the clip at the point where the exhaust goes through the bulk head and you should have a sencer wire in the exhaust , unclip it and you can then pull out the exhaust with a bit of push n pulling ! the front part of the exhaust has a water pipe under the front part and then the bolts on the manifold which the outer ones are tight against the body but you only undo and remove with the exhaust , tight squeese ! Refit in reverse order !!

http://www.yamaha-motor.com/assets/service/manuals/2002/LIT-18626-04-44_298.pdf

Size does not convert to h.p. You need RPM, compression ratio, efficiency, crank shaft length, number of cylinders and efficiency, valve spring force constant, valve weight, and many other variables. Horsepower is normally measured with a dynomometer (dyno). It is not calculated.

you may have an air leek on carbs or its running too lean

Check the ground wire from coil to engine & the plug wire that it doesnt have any cracks which could make it short out or try another plug as they can become faulty...there is no fuse in the sparkplug wire

if its xlt 1200 its inside the big black electric box at rear of engine ! unbolt it and remove the back cover !

run on hose adapter and check engine is cooling by feeling the engine and exhaust system ! if ok then check intake water pipe is clear ! 2 or 4stroke?

possible seized water pump the one that is not working follow it back to the source look for blockages but personally i cannot see a blockage stopping all water coming out so i would look more at the water pump

which make of jet ski have you as all different ??

no i do not know where to download it from but its easy to do there are two different starter solenoids and you will need to know this information before ordering a new one so follow these instructions and it will be easier for you DESCRIPTION a solenoid is composed of copper coil windings with a metal projectile inside when a electrical current is passed through it it turns the metal projectile into a negative magnet and shoots it into what ever it need to move (1) is pre engaged and is connected to your starter motor and will take quiet a bit of knowledge and quiet a few tools to disconnect the starter solenoid from the starter motor these are designed to make it harder for the diy mechanic to work on so that you have to spend money in a work shop getting it repaired most machines now days are fitted with this type of starter (2) is a normal starter solenoid and stands alone you will need to find this out before you replace it and obtain the new starter solenoid from your local dealer and make sure it is the right one for your (wet bike / jet ski) these are designed for the home diy mechanic and are very easy to replace LOCATION if it is a pre engaged type from your main live battery terminal there will be a long red cable that goes direct to your starter solenoid that is attached to your starter motor disconnect your main red cable and the two wires undo your starter motor complete it will be easier to work on may be dearer but easier to replace the whole unit the non pre engaged type your normal starter solenoid will be close to your battery normally in a rubber housing of some sort the solenoid has two main live polls (one main cable goes to your battery with a label mark this with BATT) (the second main cable goes to your starter motor with a label mark this with START) and two wires coming from it (they go to your starter button) and is placed between your battery and your starter motor SOLUTION make sure your battery is disconnected and both live and earth cables are undone and disconnected and remove the battery your main RED live wire from your battery follow it until it attaches to a block that block is your starter solenoid disconnect the block by undoing both the nuts that hold the cable in place on the polls disconnect the two wires and replace in the same position as the original one reconnect the cables and the wiring in reverse to the way you took them off reconnect your battery and start up hope this info is ok good luck