HB 15 muffler bolt size anyone?

HB , Helmet Burnhard, engines, Made in Germany. Owned by RJL Industries since 1989.

Moderator: SteveM

HB 15 muffler bolt size anyone?

Postby Eindecker » Sun Jul 03, 2005 10:01 pm

Previous owner of my HB .15 buggered the first few threads in the muffler mounting (single) bolt hole by using an incorrect (but close) shortlength sae bolt. If I knew the correct metric size, I could retap the first few threads and salvage the situation with a proper longer bolt reaching into the unmolested deeper original threads. Can anyone size the bolt or hole from their engine for me? (if needed, look for a screw pitch gauge in your metric tap & die set) Bolt is MECOA item #25-1231

Postby MECOA » Wed Jul 27, 2005 3:09 pm

the bolt size is 3mm x 0.5mm pitch
Site Admin
Posts: 1095
Joined: Mon Jun 30, 2003 9:48 pm

Return to HB (German) engines Tech Questions

Who is online

Users browsing this forum: No registered users and 1 guest