Reply
 
Thread Tools Search this Thread
 
Old 16 September 2009, 00:20   #1
Member
 
Country: New Zealand
Town: Tauranga
Boat name: Extra Pleasure
Make: Atomix
Length: 5m +
Engine: Outboard 60HP 2Strke
Join Date: Aug 2009
Posts: 182
Spark Plugs - Washer

Hey,

I'm replacing the spark plugs in my Mercury 60HP 2 Stroke.

I'm replacing like for like/the recommended plug:

NGK BPZ8H-N-10

However, the plugs in the outboard which I'm replacing DO NOT have washers.

The new one's i've just purchases DO have washers.

Do I simply use the washer ones, but adjust the amount of turn after finger tight (1/16 no washer, 1/4 with washer).

Or do I need to take the plugs back and get non washer versions?

Cheers in advance
Rob
__________________
rjbathgate is offline   Reply With Quote
Old 16 September 2009, 06:18   #2
Member
 
Country: UK - England
Town: bicester
Length: no boat
Engine: outboard only
Join Date: Feb 2009
Posts: 913
just take them out of the package make sure the gap is correct (1mm or 40thou) put them into your powerhead and torque to 20lbs/ft
__________________
uncle al is offline   Reply With Quote
Old 17 September 2009, 02:47   #3
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
The washers are soft copper or aluminum, designed to crush and seal the plug into the head. You *do* need them.

Assuming you've got the correct plugs for the motor, not having the washers may allow the plug to extend too deep in the chamber, and in the worst case may hit the cylinder as it comes up.

jky
__________________
jyasaki is offline   Reply With Quote
Old 17 September 2009, 16:21   #4
Member
 
Country: USA
Town: Seattle
Boat name: Water Dog
Make: Polaris
Length: 4m +
Engine: Yamaha 60hp
Join Date: Apr 2007
Posts: 1,152
Double check the old plugs didn't actually have washers that are stuck down in the hole. The plug would be at the wrong height if you accidentally used the old plus a new washer.
__________________
captnjack is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 22:10.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.