Reply
Old 01-11-2009, 11:23 AM   #1
Junior Member
 
Junior Member
Join Date: Jan 2009
Location: De Kalb Junction, NY
Thanks: 0
Thanked 0 Times in 0 Posts
Sled: 1971 303 Wankel
I have just purchased a 1971 Panther 303 wankel with the RC 1-18.5 motor and I need to know the correct fuel mixture. I would also like help locating a manual for the sled.

Thanks
koleycooper is offline   Reply With Quote
Remove Ads
Old 01-11-2009, 05:50 PM   #2
Senior Member
 
sixty8cat's Avatar
 
Senior Member
Join Date: Oct 2003
Location: Montgomery, Pa
Thanks: 1
Thanked 101 Times in 101 Posts
Sled: 68 Panther,70 Puma 744, 91 EXT 530.
07-08 Mileage: 500
ATV: 88 quadrunner 250 lt
With todays oil being 100% better that oils from the 70's. I ran arctic "50:1" oil mixed 40:1 (16oz oil to 5 gal gas) in my 72 303 wankel panther. Back in the day, it was 20:1. You where to mix 5 gal gas to 1 qt 30wt motor oil. If you feel uncomfiortable running 40:1 try something in between. I had no problem with a 40:1 mix and I run that in all my vintage sleds. From my 68 P-17-H Panther to my 79 340 Panther. Bottom line is todays oil are much better and running excessive oil is a waste, also makes the engine hard to tune, (rich).
__________________
I will give up my vintage sled when they pry my frozen dead thumb from the throttle......WOT of course!
68 P-17-H
70 Puma 740 Sachs
72 440 Panther
91 EXT 530
1966 Cub 102C
1968 cub 104C
88 Quadrunner 250 LT
83 Suzuki GS 650 GL
89 Plymouth Horizon
sixty8cat is offline   Reply With Quote
Old 01-11-2009, 09:22 PM   #3
Junior Member
 
Junior Member
Join Date: Jan 2009
Location: De Kalb Junction, NY
Thanks: 0
Thanked 0 Times in 0 Posts
Sled: 1971 303 Wankel
Thanks for the info!! I am new to the sachs wankel motor and I am having trouble starting and keeping it at idle after running. It runs great at mid to high rev but will not run at low engine speed. I am getting a carb rebuild kit for the Tillotson HL289A. Can anyone tell me where the jet screws should be set to start fine tuning?

If anyone has another theory on why it is running poorly please let me know.

Thanks for any help.
koleycooper is offline   Reply With Quote
Old 01-11-2009, 09:35 PM   #4
Senior Member
 
Panther440's Avatar
 
Senior Member
Join Date: Oct 2008
Location: Alexandria Bay, NY
Thanks: 0
Thanked 1 Time in 1 Post
Sled: 70,74 Panther 64,69 Polaris
Basic rule of thumb is 1 turn out on both screws from a slightly bottomed out position.

Bottomed out meaning tighten the screw until it stops, go about this gently!!!!, until it stops, then loosen 1 full turn. That should be a good starting point. TO get it to idle, warm up the motor then mess with the low speed screw usually located on the right of the carburetor.

You may have to mess with the idle speed screw as well, which holds the throttle plate at varying degrees of openess.

Nice to see a fellow Northern New Yorker on here! Welcome welcome!!!!
Panther440 is offline   Reply With Quote
Old 01-11-2009, 10:03 PM   #5
Senior Member
 
sixty8cat's Avatar
 
Senior Member
Join Date: Oct 2003
Location: Montgomery, Pa
Thanks: 1
Thanked 101 Times in 101 Posts
Sled: 68 Panther,70 Puma 744, 91 EXT 530.
07-08 Mileage: 500
ATV: 88 quadrunner 250 lt
pull the intake elbow off and fill it with gas, check for pin holes. this was a problem on them wanksters. Heres more info. Have fun.
Attached Thumbnails
1971 303 Wankel fuel mixture-wankel_service_001.jpg   1971 303 Wankel fuel mixture-wankel_service_002.jpg  
__________________
I will give up my vintage sled when they pry my frozen dead thumb from the throttle......WOT of course!
68 P-17-H
70 Puma 740 Sachs
72 440 Panther
91 EXT 530
1966 Cub 102C
1968 cub 104C
88 Quadrunner 250 LT
83 Suzuki GS 650 GL
89 Plymouth Horizon
sixty8cat is offline   Reply With Quote
Old 01-17-2009, 10:01 AM   #6
Junior Member
 
Junior Member
Join Date: Jan 2009
Location: De Kalb Junction, NY
Thanks: 0
Thanked 0 Times in 0 Posts
Sled: 1971 303 Wankel
Thanks for the advice guys. I put the new diaphrams in the carbeurator last night. That seems to have fixed the problem. It is starting and running like a champ now.
koleycooper is offline   Reply With Quote
Old 01-23-2009, 07:02 PM   #7
Senior Member
 
Senior Member
Join Date: Dec 2005
Thanks: 0
Thanked 11 Times in 11 Posts
Sled: 1972 303 Panther
ATV: Pontiac VAN
2007 Mileage: 20,000
I run 40-1 Klotz in mine but almost any good brand of oil will work in these now. Not like the old days when you had to shake the sleds to keep the gas mixed!
gbarchives-eltigre is offline   Reply With Quote
Reply

Lower Navigation
Go Back   ArcticChat.com - Arctic Cat Forum » Snowmobiles » Arctic Cat Snowmobiles » Vintage 1992 older


Search tags for this page
1971 artic cat 303 panther oilmix ratio
,
303 wankel parts engine oil
,

arctic cat 303 wankel

,
fuel/oil ratio mixture for 1970 articat 303 rotory motor
,
sachs rotary engine 303 manual
,

tillotson hl289a

,

wankel 303 oil

,
what is the gas to fuel what is the oil to gas ratio for a 71 arctic cat panther
,

what kind of oil do you use in a sachs wankel rotary engine

,

what type of oil do you use for wankel 303

Click on a term to search our sites for related topics.

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On



Garage Plus vBulletin Plugins by Drive Thru Online, Inc.