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OS91 C-Spec

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Old 02-22-2003, 06:47 PM
  #1  
Marcello
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Default OS91 C-Spec

I bought the OS91 C-Spec in Japan.
Where is it possible to find the english manual ? I've the japanese version .....
Difficult to read.
Please help me
Old 02-23-2003, 08:57 AM
  #2  
PatternFlyer
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Default OS91 C-Spec

Marcello,
Why not download a copy of 91SX-H manual? The manual you specified is not available at the OS engine website below.

http://www.osengines.com/manuals/index.html

I believe, they are very similar except the inside parts and head. Basic running info shouldn't be different between the two versions of 91SX-H.
Tower hobbies said the C-Spec has lighter piston etc.
Good luck.
Old 02-23-2003, 06:33 PM
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Marcello
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Default OS91 C-Spec

Originally posted by PatternFlyer
Marcello,
Why not download a copy of 91SX-H manual? The manual you specified is not available at the OS engine website below.

http://www.osengines.com/manuals/index.html

I believe, they are very similar except the inside parts and head. Basic running info shouldn't be different between the two versions of 91SX-H.
Tower hobbies said the C-Spec has lighter piston etc.
Good luck.
The reason why is the 91SX-H has a different carb (only one needle) while the OS91 C-Spec has two that I really don't know how to set.
Thanks anyway for your reply
Old 02-23-2003, 09:18 PM
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PatternFlyer
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Default OS91 C-Spec

Marcello,
The needle in the front is the midrange needle, one in the original place where the fuel tubing connect is the high speed needle.

If you need the English manual for 3 needle carb setting, download the 70SZ-H or .61 World champion version manuals.
All the above has the 3 needle carbs.
Old 02-23-2003, 10:03 PM
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Marcello
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Default OS91 C-Spec

Done. Thank you

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