formariz 11,849 #26 Posted January 26, 2019 Exactly right. Another item that one should always have a spare of. That along belts, condenser, points,plugs and ignition coils is a standard here. Oops forgot to mention engines 1 Share this post Link to post Share on other sites
ericj 1,576 #27 Posted January 26, 2019 I've bought onan voltage regulators and fuel pumps off the auction site for over the oceans for less then $ 10.00 each. I've used the voltage regulators but have not tried the fuel pumps yet eric j Share this post Link to post Share on other sites
WHX?? 46,739 #28 Posted January 26, 2019 Same here on the regs Eric.....so far good luck... Share this post Link to post Share on other sites
buckrancher 2,675 #29 Posted January 26, 2019 I have been using those alum check valves on my 520's for a few years now and they work excellent Brian 1 Share this post Link to post Share on other sites
tunahead72 2,340 #30 Posted February 10, 2019 (edited) Hey @formariz thanks for the link for those check valves, and to everybody else for passing along your experience with them. It looks like Amazon no longer has those, but here's a link to something similar. I plan to install something like these on both my tractors soon: https://www.amazon.com/Return-Check-Petrol-Diesel-Aluminium/dp/B06XK5CSS4/ref=lp_15826214011_1_2?srs=15826214011&ie=UTF8&qid=1549822071&sr=8-2&th=1 -------- EDIT: Similar check valves are also available on eBay, some from sellers in North America, with presumably quicker shipping than ordering directly from Hong Kong or wherever. I can't tell if these are any different than the ones @formariz originally linked. If anybody has a reliable trusted source for these, I'd love to hear about it. Edited February 10, 2019 by tunahead72 Share this post Link to post Share on other sites
CraigArndt 13 #31 Posted February 17, 2019 I rebuilt the fuel pump on my 520H during the restoration. It shot fuel 1/2 across the garage when I tested it. The diaphrams get tired after 30 years, but that design does work great. Pumps a lot of fuel. 1 Share this post Link to post Share on other sites
lynnmor 6,775 #32 Posted February 17, 2019 3 hours ago, CraigArndt said: I rebuilt the fuel pump on my 520H during the restoration. It shot fuel 1/2 across the garage when I tested it. The diaphrams get tired after 30 years, but that design does work great. Pumps a lot of fuel. Did you find a source for the diaphragms or did you make your own? Share this post Link to post Share on other sites
