Product Manual

Specications Information and Repair Parts Manual 2MP Series
2MPX-250-00 2 11/2016
3. Pump will self-prime to a vertical height of 10’ in less than
one minute, 20’ may take up to 4 minutes. If pump doesn’t
prime: check for air leaks, move pump closer to liquid,
shorten suction line, remove loops and high spots from
suction line, rell pump with liquid or see troubleshooting
guide in this manual.
4. Operating pump at shut-o󰀨 or close to shut-o󰀨 for an
extended period of time, greater than a minute or two,
will cause premature wear and possible internal damage.
Operating at ows less than 10 gpm for models 2MP5AR,
2MP5HR, & 2MP7ZR, 20 gpm for models 2MP9AR,
2MP9HR, 2MP9ZR, & 2MP13HR, 2MP13ZR and 40 gpm
for 2MP13AR should be avoided.
5. Always allow engine to cool before refueling.
After Pump is Shut Down
1. Always ush the pump out at the end of operation if the
liquid being pumped may leave a solid or sticky residue
inside of pump or if a buildup of sediment inside the pump
is expected.
2. Always drain pump completely of liquid if there is a chance
of freezing.
Storing Pump
1. When pump is out of service for an extended period of time,
completely drain liquid from casing and store pump in a dry,
protected, well-ventilated area.
2. Add fuel stabilizer to engine fuel tank or drain fuel from
tank. Turn fuel tank valve to the o󰀨 position.
COMPLETE PUMP ASSEMBLY PROCEDURE
Reference Repair/Replacement Part Exploded View and Lists
NOTE: Do not use petroleum based lubricants with EPDM /
EPR rubber seal parts and o-rings. Petroleum based products
will damage EPDM/EPR components.
NOTE: Apply a small amount of anti-seize lubricant to bore,
threaded or keyed, in impeller. If petroleum based anti-
seize lubricant is used, do not allow it to contact EPDM/EPR
components.
2MP5 (5/8-18 threaded shaft) SERIES ASSEMBLY:
Assemble Bracket
1. Apply permanent thread locker to end of ¼-20x1-1/2” stud
(Ref. No. A4). Install studs into tapped holes in bracket
(Ref. No. A1). Stud cannot extend past back face (ush).
2. Lock studs in position with ¼-20 jam nuts (Ref. No. A5).
Install Seal Plate / Bracket
1. Install locating bushing (Ref. No. B4) into bore in engine
side of seal plate (Ref. No. B1).
2. Install shaft seal seat (Ref. No. A17) into bore in pump side
of seal plate. Lubricate rubber cup of seat with soapy water.
Press into seal plate with thumb pressure, take care not to
scratch or damage seal face.
3. Install #270 o-ring (Ref. No. D5) into bracket. Lubricate
o-ring with soapy water.
4. Install shaft collar (Ref. No. A15) onto engine (Ref. No.
A18) shaft, large diamter end towards engine.
5. Install seal plate into bracket. Fasten with four screws (Ref.
No. B3).Tighten screws to 140 in-lb torque.
6. Locate seal plate and bracket assembly onto engine
(Ref. No. A18). Locating bushing should center assembly
on engine shaft. Slide on until seal plate bosses contact
engine bell housing.
7. Install a #011 o-ring (Ref. No. D11) onto four socket
screws (Ref. No. B2). Lubricate o-ring with soapy water.
Fasten seal plate assembly to engine with screw & o-ring
assemblies. Tighten screws to 140 in-lb torque.
Install Stub Shaft
1. Apply permanent thread locker onto threads of 3/8-16x3/4”
hex screw (Ref. No. A14). Install screw into threaded bore
in threaded end of stub shaft (Ref. No. A13).
2. Lubricate inside diameter of rubber portion of shaft seal
head (Ref. No. A15) with soapy water. Insert smooth end
outside diameter end of stub shaft into seal head. Slide
seal head onto stub shaft until seal spring washer contacts
shoulder and spring compresses.
3. Locate stub shaft onto end of engine shaft. Thread on
clockwise until stub shaft bottoms on shaft collar. This will
position the seal head. Be careful when tightening stub
shaft that seal seat ring or seal head ring is not damaged.
2MP7 – 2MP13 (1”-14 threaded shaft) SERIES ASSEMBLY
Assemble Bracket
Same as 5/8-18 threaded section
Install Adapter
1. Locate adapter (Ref. No. C4) onto engine (Ref. No. A17)
bell housing. Position cast arrow up. Locate adapter
machined bore on engine bell housing locating diameter.
2. Install four screws (Ref. No. C5). Tighten screws to 140
in-lb torque.
3. Install shaft collar (Ref. No. A15) onto engine shaft,
chamfered end towards engine.
Install Seal Plate / Bracket
1. Install locating bushing (Ref. No. C3) into bore in engine
side of seal plate.
2. Install shaft seal seat (Ref. No. A17) into bore in pump
side of seal plate. Lubricate rubber cup of seat with soapy
water. Press into seal plate with thumb pressure, take care
not to scratch or damage seal face.
3. Slide seal plate over engine shaft until seal plate bottoms
against adapter. Locating bushing will center seal plate on
engine shaft.
4. Install #270 o-ring (Ref. No. D5) into bracket (Ref. No. A1).
Lubricate o-ring with soapy water.
2MP Series Pumps