Hey all, long time lurker, first time poster.
I have a early 70's Merc 400 40 horse outboard. Its on an older 14 foot fiberglass boat. I picked it up late last season, and did some of the basics too it.
Totally gutted and rebuilt the carb and went to a high altitude jet (boat spends its life above 6500 ft and its not unusual for it to go up to 9500 ft) tear down was NOS kit, with new gaskets, needles etc.
Definately ran better after that but still didn't seem 100%. I bought a "tiny tach" for it, engine only revs to about 2200, not the service manual recommended 4800 to 5200.
First thing this season, I tore down the lower unit and put in a new water pump impeller, gaskets, and top housing. Bottom hosing looked worn, but didn't have one on hand and didn't want to wait on ordering one as it didn't look too bad. Got it all put back together, but now the engine won't go into neutral or reverse, its all forward, all the time. Must be I didn't get that shift linkage lined up right, it was a bear too. Any insight to
I have a early 70's Merc 400 40 horse outboard. Its on an older 14 foot fiberglass boat. I picked it up late last season, and did some of the basics too it.
Totally gutted and rebuilt the carb and went to a high altitude jet (boat spends its life above 6500 ft and its not unusual for it to go up to 9500 ft) tear down was NOS kit, with new gaskets, needles etc.
Definately ran better after that but still didn't seem 100%. I bought a "tiny tach" for it, engine only revs to about 2200, not the service manual recommended 4800 to 5200.
First thing this season, I tore down the lower unit and put in a new water pump impeller, gaskets, and top housing. Bottom hosing looked worn, but didn't have one on hand and didn't want to wait on ordering one as it didn't look too bad. Got it all put back together, but now the engine won't go into neutral or reverse, its all forward, all the time. Must be I didn't get that shift linkage lined up right, it was a bear too. Any insight to