I use a O ring works fine.
From: Mike Gladu <firstname.lastname@example.org>
Sent: Sunday, October 16, 2011 4:53 AM
Subject: Re: [Honda-C70] oil change 1983 C70
At 7:04 AM +0000 10/16/11, brenda.lees wrote:
>Hi Folks, Just wondering if you can help me with this. Is there
>supposed to be a washer for the oil drain plug/bolt? If so, what
>Many thanks, Brenda
Yup. An aluminum flat washer. Aluminum deforms a little each time
it's compressed, so it seals well for cheap.
12mm x 20mm (inside and outside diameter).
A plain non-steel washer might work temporarily, but is not
recommended. You need the soft metal material to seal well, stay
tight, and hold the oil in.
Otherwise you'd need some kind of sealant on both sides of the
washer, and that goops up the bottom of the engine in a way that
isn't easy to clean, and it isn't as simple and effective as aluminum.
[Non-text portions of this message have been removed]
1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs: