Koshin KTH-80S User Manual

Operating Instructions & Parts Manual
KTH-S SERIES
TRASH PUMP
1
Please read and save these instructions and Engine owner`s manual. Read carefully before attempting to assemble, install,
operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury
and or property damage! Retain instructions for future reference.
Heavy Duty
Connection Dia
Connection Thread
Total Head
Discharge Volume
Max. Suction Lift
Type
Model
Displacement
Fuel
Engine Oil
Fuel Tank Capacity
Starting System
Standard Accessory
Net Weight
Guaranteed Sound Power
PUMPENGINE
SPECIFICATIONS
Model KTH-80S KTH-100S
3” (80 mm)
27 m (89 ft)
1450 L/min (383 USG/min)
Honda GX270
270 cm
3
5.3 L (1.4 USG)
66 kg (146 lbs)
LWA 105 dB
4” (100 mm)
30 m (98 ft)
2050 L/min (542 USG/min)
Honda GX390
389 cm
3
6.1 L (1.6 USG)
82 kg (181 lbs)
LWA 106 dB
Parallel Pipe Thread or NPT
8 m (26 ft)
Air Cooled 4 stroke OHV Gasoline Engine
Automotive Unleaded Gasoline
SAE 10W-30 API SJ or later, for general use.
Recoil starter
None or 1 Strainer, 2 Hose Couplings, 3 Hose Bands, 1 Engine Tool Set
PERFORMANCE CURVE
*Performance ratings are guaranteed
minimum, not inflated maximum.
Water drain plug
Knob
Frame
Muffler
Fuel tank cap
Oil drain plug
Plug for
removing impeller
Priming plug
Discharge
Suction
Lifting eye
Handle
E
N
G
L
I
S
H
E
S
P
A
Ñ
O
L
F
R
A
N
Ç
A
I
S
Description
Trash Pumps provide superior performance in dirty water applications.
All Trash Pumps have silicon carbide mechanical seals,
high chrome cast impellers, and spheroid graphite ductile iron for
longer durability. Honda Engines standard with oil alert are
coupled with a lightweight aluminum die cast pump protected
by a roll cage. Volutes are a spheroid cast graphite
iron with high chrome impellers with silicon
carbide mechanical seals for longer life and less
maintenance. Self-priming up to 26 feet.
Applications are for dewatering construction,
industrial and civil sites where the water contains
larger solids of up to 1
1
/2 inches.
In addition horizontally-fixing, front cover handle can
fix lengthwise direction.
(
USG/min
)
100 200 300
DELIVERY VOLUME (L/min)
TOTAL HEAD (m)
400 500 600
30
25
20
15
10
5
0 800 1200 1400600200 400 1600 1800 2000 2200 1000
100
90
80
70
60
50
40
30
20
10
KTH-80S(GX270)
KTH-100S(GX390)
(
ft
)
Distributed by
PumpBiz, Inc.
800-PumpBiz.com

Koshin KTH-80S Specifications

General

Model	KTH-80S
Type	Water Pump
Pump Type	Centrifugal
Discharge Bore	80 mm
Max Head	28 m
Suction Lift	8 m
Inlet/Outlet Diameter	80 mm
Fuel Tank Capacity	3.6 L
Weight	30 kg
Engine Type	4-stroke
Displacement	179 cc
Starting System	Recoil

Summary

Product Overview

Performance Curve

Graphical representation of pump performance based on delivery volume and head.

Technical Specifications

Detailed technical data for KTH-80S and KTH-100S models.

Safety Precautions

General Safety Warnings

Crucial warnings about fire, fumes, flammable liquids, and proper ventilation.

Operational Safety Guidelines

Safe operating practices, including water temperature, avoiding dry running, and personal safety.

Preparation for Operation

Accessory Check and Engine Oil

Verify all accessories are present and ensure correct engine oil level.

Coupling Assembly Installation

Proper installation of the pump coupling to prevent leaks.

Operating Procedures

Priming and Pump Operation

Steps for priming, strainer submersion, and avoiding discharge obstruction.

Operational Warnings

Warnings against dead-heading, water hammering, and hot components.

Post-Operation and Storage

Cleaning and Long-Term Storage

Draining water and fuel for proper storage to prevent damage.

Troubleshooting Common Issues

Recoil, Delivery, and Priming Problems

Solutions for issues with the recoil starter, low delivery, and pump priming.

Engine Start and Oil Leakage

Diagnosing and resolving engine start failures and oil leaks.

Maintenance Procedures

Hose Connection and Spark Plug Checks

Verifying suction hose integrity and spark plug condition.

Mechanical Seal Replacement

Step-by-step guide for replacing the pump's mechanical seal.

Parts Identification

KTH-80S Parts List

List of parts and their codes for the KTH-80S model.

KTH-100S Parts List

List of parts and their codes for the KTH-100S model.