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Jan
Spark plug gap 10 - 11 mm 0039 - 0043 in. Yamaha Outboard Parts by Year 1998 6MSHW CYLINDER CRANKCASE.
035 - 039 Thats the gap for my 1999 75 and theyre basically the same motor2 stroke that is.
Yamaha outboard spark plug gap. 245 rows Yamaha Outboard NGK Spark Plug Guide. NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below.
You may also find the NGK spark plug code helpful. The spark plug gap for most Yamaha outboards is around 030 - 0035in. What is the spark plug gap for 1993 Yamaha 130hp outboard motor.
The recommended spark plug gap per NGK is 039. Setting the gap for your particular engine is important as insufficient spark plug gap can cause pre-ignition detonation and even engine damage. Too much gap can result in a higher rate of misfires loss of power plug fouling and poor fuel economy.
NGK spark plugs come from the factory pre-gapped and are the plugs of choice for the Yamaha spark plugs and compression step of 100-Hour. All NGK spark plugs for Yamaha Outboards are sold in 10 packs. Ordering 10 spark plugs will be equal to one box Note 2.
Refer to Technical Bulletin O2000-015A to ensure the correct spark plug and gap are used. Refer to Technical Bulletin O2003-016 to ensure the correct spark plug and gap are used. I looked in the Yamaha manual and it states.
1516 mm 00590063 in What I cant find is how to gap the plugs are they have non-standard tips one on each side of the plug. Spark plug gap a Out of specification Regap. Spark plug gap 10 - 11 mm 0039 - 0043 in.
Your ground electrodes are semi circular at the tips. IMO THE BEST WAY TO CHECK GAP IS WITH A 116 drill bit between the ground electrodes and center electrode both vertical. This gap should be 059-063.
When I get the time Ill post the pics. Better off change your plugs per Yamaha maintenance schedule in your owners manual. How many spark plugs does a Yamaha outboard use.
How often should you change the spark plug gap. SPEC MAINTENANCE SPECIFICATIONS Model Item Unit GP800R CRANKSHAFT ASSEMBLY Crank width A mm in 72957300 28722874 Deflection limit B mm in 005 0002 Big end side clearance C mm in 025075 00100030 Maximum small end. Buy OEM Parts for Yamaha Outboard Rigging and Parts Maintenance Items.
Your JavaScript is disabled. I recently had a problem with the engine losing power at anything over 4000 rpms. I thought it was a fuel filter problem but it turned out to be two loose spark plugs.
I dont know what caused them to work loose but I removed both of them with my fingers. I run NGK plugs and this is the first time Ive ever had a spark plug work loose. How To Change Spark Plugs In A Yamaha Outboard Motor.
If playback doesnt begin shortly try restarting your device. Videos you watch may be added to the TVs watch history and influence TV. Champion Spark Plugs for Yamaha Outboard Motors.
Champion spark plugs are original equipment on many outboard and inboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may also find the Champion spark plug.
Petty Officer 2nd Class. 90hp yamaha spark plug gapping. 035 - 039 Thats the gap for my 1999 75 and theyre basically the same motor2 stroke that is.
These are the two most common types of spark plugs used in outboa. Here is the difference between surface gap perma gap spark plugs and J style spark plugs. You will need four spark plugs view the Yamaha F115 Maintenance Chart to select the correct plugs.
Spark plug part numbers ending in a dash and then two numbers -xx are already set with the proper gap. We recommend a pre-gaped NGK spark plug rather than trying to gap the plugs yourself. NGK spark plugs designated with a letter R as BKR7HS-10 have incorporated a resistor to minimize.
If you use NGK. B8HS 8- 10 for 2 cyl jobbies 92 onwards. B7HS-10 ok if You pootle along a lot.
B8HS Gap 10 thou. B7HS again if You aint thrashing it all the time. B8HS or7 for older engines I reckon.
Same thread type and reach and electrode type. The 10 ones run with a bigger gap Most Japanese engines will spec NGKs as standard fit. The 1998 model Yamaha 250 hp outboard requires an NGK BR9HS-10 spark plug gapped to 039 in.
This Yamaha NGK-BR7HS-10-00 PLUG SPARK NGK BR7HS-10 fits the following models and components. Yamaha Outboard Parts by Year 2000 6MLHY CYLINDER CRANKCASE. Yamaha Outboard Parts by Year 1999 6MLHX CYLINDER CRANKCASE.
Yamaha Outboard Parts by Year 1998 6MSHW CYLINDER CRANKCASE. The rule of thumb for the spark plug gap on older engines is coil ignition 0025 thou and magneto ignition 0018 0020 thouSpark plugs are typically designed to have a spark gap which can be adjusted by the technician installing the spark plug by the simple method of bending the ground electrode slightly. The spark plug gaps are good and appear new.
There seems to be a lot of oil on the spark plugs and inside the combustion area for a four stroke. There is a light coating of oil inside the air intake. I pulled the breather hose on the carb intake and there was a light coating of oil in it.
The valve cover end of the breather hose appears dry. Yamaha outboard spark plug chart. Inspecting Idle Speed Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket or the upper part of the swivel bracket.
Gas spark plugs Shop for Yamaha outboard spare parts for all make and models via Outboard Spares now. If your engine uses surface gap plugs which are common in many Mercury engines and some Yamaha models you do not have a gap to erode. You can still check the plug for wear or fouling.
My engine uses a more conventional spark plug with a gap to be set so I need to periodically check them. I have a Yamaha 5hp aircooled 2 stroke outboard 5 BS I think it is pre-80sNumber 661S 00219last number scratched off I am trying to find out the points gap. These engines were not sold in America until 1984prior to which they were slightly differentThey were sold in Europe before 1984.