20 Most Recent Clymer Marine Maintenance and Repair Manual '99 '02 Yamaha 115 250 HP 2 stroke Outboards Questions & Answers


very basic carbs ! clean all jets and emulsion tube then check the float needle is clean and the tip isnt grooved , blow threw all ports etc and then refit and set the mix screw 1.5 turns out for starters then run up in a tub of water and fine tune till its happy to idle and rev up ! make of engine ??

Clymer Marine... | Answered on Apr 20, 2019


Check your battery wires. If the battery disconnects even for one second or the grounds are bad then the stator has no where to put the charge and it will fry.

Clymer Marine... | Answered on Aug 25, 2018


67H-83672-00-00
All models uses the same unit since 2004 ( from 30 to 300hp)

Clymer Marine... | Answered on Nov 14, 2017


Unscrew the 4 idle mixture screws 1/2 turn 1 at the time till sneezing stops...
Clean your carburettors

Clymer Marine... | Answered on Oct 04, 2017


Engine or gearcase seized...
Remove the recoil starter ( 3 bolts and the startingear link)
If you can turn the flywheel slightly: Gearcase seized
If you can't turn the flywheel at all: Engine seized.
In both cases: If you can't disassemble and have the job done yourself, forget that motor...

Clymer Marine... | Answered on Oct 04, 2017


First thing to check: Disconnect the tiny hose between the check outlet and the engine. Disconnect it at the engine side.
With an airgun, blow in the check hole from outside to engine side.
With an airgun, blow out the engine connection.
Start the engine, check waterflow out of the engine connector. If water, reconnect the hose and check the water at the checkpoint.
If still no water at the engine connection: replace the impeller!

Clymer Marine... | Answered on Oct 04, 2017


Nice engine

Clymer Marine... | Answered on Oct 04, 2017


That's a current problem.
OR the screw is rusted in place. So then use WD40 or eqivalent to free the screw.
Or the parts inside are worn. Remove the friction screw. Then, remove the 4 bolts holding the swivel cap. Remove the entire engine from the swivel to prevent it fall on the ground. Replace the worn parts.

Clymer Marine... | Answered on Oct 04, 2017


Have you checked manualslib.com?

Clymer Marine... | Answered on Oct 04, 2017


BR7HS-10 (1mm gap)

Clymer Marine... | Answered on Sep 25, 2017


Sounds like it has a fuel restriction. Hook up a fuel pressure gauge on the vst tank on the motor to make sure you have 30-50 lbs of fuel pressure.

Clymer Marine... | Answered on Aug 20, 2017


Runs with the choke on..!??.... the choke cuts off the air supply or in some cases adds extra fuel.. With respect to both, ..they accomplish one thing.. the richen up the fuel mixture..SO with that..,, your engine is starving for fuel ... Its usually the low speed jets are clogged...there are numerous SMALL air and fuel passages that are sometimes hard to clean properly.. Take the carbs to a qualified professional and let him clean and set them.. (if you removed any of the screws that affect the jetting/air/fuel mixture/idle circuit,, they MUST be set back to the factory settings)..

Clymer Marine... | Answered on Jun 25, 2017

Not finding what you are looking for?
Clymer Marine Maintenance and Repair Manual '99 '02 Yamaha 115 250 HP 2 stroke Outboards Logo

Popular Tags

86 questions posted

Ask a Question

Usually answered in minutes!

Top Clymer Boating Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Bruce

Level 2 Expert

87 Answers

Andrew Taylor
Andrew Taylor

Level 3 Expert

30497 Answers

Are you a Clymer Boating Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Clymer Boating

  • Clymer Boating

Most Popular Question

yamaha 40 outboard stuck full throttle

  • Boating
Loading...