FFMan 0 #1 Posted October 5, 2017 I just acquired and O & R engine like this http://www.ebay.co.uk/itm/RARE-VINTAGE-O-amp-R-OHLSSON-amp-RICE-034-COMPACT-034-3-4Hp-SPK-IGN-HYDROPLANE-ENGINE-/112585481541? But mine has lost the decal stating what power it is - can i tell some other way ? Mine also has a centrifugal clutch and V-belt pulley on it. Anyhow, when I got it it had no spark, so i cleaned the points and connections and now get a good spark. I got a new plug a Champion UY6 and mixed the fuel as directed on the decal with a mineral 2-stroke oil which results in something like 9:1 mix if I've done my math right - very oily compared to the 25 or even 50 to one of later engines. I read somewhere on here afterwards 32:1 was OK with a modern mineral oil. Carb diaphragm seemed intact, i heard they used to be available on ebay but i can't find them. does anyone know where you can get them ? It ran for 5 seconds or so then stopped, probably oiled up on the 9:1 mix ? I ran out of time to do anything more but will get back to it tomorrow, give it a clean and remix the fuel. comments/advice appreciated Share this post Link to post Share on other sites
Webhead 95 #2 Posted October 6, 2017 32:1 modern 2 stroke oil is absolutely fine. 9:1 will kill the mosquitos. You've already figured out the cause of no spark. 95% of them that do not have spark are caused by dirty points. All engines that will be ran, should have the diaphragms replaced. I sell them for $10, shipped in the US, $11 anywhere else in the world. When they are gone, I will not be making any more, and I don't sell them on ebay because they take what little profit is made on them and it just became a PITA, along with selling all of my parts for these engines. Share this post Link to post Share on other sites
FFMan 0 #3 Posted October 8, 2017 thanks Webhead - i'll take a diaphragm from you - do you take paypal ? Share this post Link to post Share on other sites
Webhead 95 #4 Posted October 8, 2017 A diaphragm is $10 cash (lunch) to: Check your PM's Share this post Link to post Share on other sites
FFMan 0 #5 Posted October 8, 2017 i'm based in the uk - i can't send cash but happy to send a cheque. Share this post Link to post Share on other sites
factory 487 #6 Posted October 8, 2017 On 10/5/2017 at 8:28 AM, FFMan said: I just acquired and O & R engine But mine has lost the decal stating what power it is - can i tell some other way ? Mine also has a centrifugal clutch and V-belt pulley on it. If you post some pictures of your engine & details like the serial number/type stamped either side of the crankcase, we can probably work out what the power should be (it will be most likely 3/4HP or 0.85HP as it has the 10mm UY6 spark-plug). Also don't forget to clean out the old filter foam from the air filter if you haven't already. David Share this post Link to post Share on other sites
Webhead 95 #7 Posted October 9, 2017 9 hours ago, FFMan said: i'm based in the uk - i can't send cash but happy to send a cheque. No problem. you can Paypal me $11 and I will send you one. PM me for my email address. ^^^Factory (David) is our cross the pond guru^^^ Share this post Link to post Share on other sites
